FR2302646A1 - Dispositif pour la le - Google Patents

Dispositif pour la le

Info

Publication number
FR2302646A1
FR2302646A1 FR7605470A FR7605470A FR2302646A1 FR 2302646 A1 FR2302646 A1 FR 2302646A1 FR 7605470 A FR7605470 A FR 7605470A FR 7605470 A FR7605470 A FR 7605470A FR 2302646 A1 FR2302646 A1 FR 2302646A1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7605470A
Other languages
English (en)
Other versions
FR2302646B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2302646A1 publication Critical patent/FR2302646A1/fr
Application granted granted Critical
Publication of FR2302646B1 publication Critical patent/FR2302646B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
  • Holo Graphy (AREA)
FR7605470A 1975-02-28 1976-02-27 Dispositif pour la le Granted FR2302646A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7502373,A NL177157C (nl) 1975-02-28 1975-02-28 Inrichting voor het uitlezen van een vlakke registratiedrager met een optisch uitleesbare informatiestruktuur.

Publications (2)

Publication Number Publication Date
FR2302646A1 true FR2302646A1 (fr) 1976-09-24
FR2302646B1 FR2302646B1 (fr) 1982-05-07

Family

ID=19823273

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7605470A Granted FR2302646A1 (fr) 1975-02-28 1976-02-27 Dispositif pour la le

Country Status (20)

Country Link
US (1) US4006293A (fr)
JP (1) JPS574016B2 (fr)
AR (1) AR208585A1 (fr)
AT (1) AT347149B (fr)
AU (1) AU505234B2 (fr)
BE (1) BE838982A (fr)
BR (1) BR7601175A (fr)
CA (1) CA1072679A (fr)
CH (1) CH601888A5 (fr)
DE (1) DE2606006C3 (fr)
DK (1) DK141184B (fr)
FR (1) FR2302646A1 (fr)
GB (1) GB1533888A (fr)
IT (1) IT1057601B (fr)
NL (1) NL177157C (fr)
NO (1) NO760631L (fr)
NZ (1) NZ180117A (fr)
PL (1) PL106758B1 (fr)
SE (1) SE411601B (fr)
ZA (1) ZA76172B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422220A1 (fr) * 1978-04-03 1979-11-02 Philips Nv Porteur d'enregistrement presentant une structure de phase a lire par voie optique et dispositif pour la lecture
EP0317224A2 (fr) * 1987-11-17 1989-05-24 Matsushita Electric Industrial Co., Ltd. Système de mise au point pour appareil de disque optique avec des éléments photosensibles dans le plan focal de l'image de la structure d'informations

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2325987A1 (fr) * 1975-09-29 1977-04-22 Thomson Brandt Dispositif de lecture optique d'un enregistrement
JPS5274218A (en) * 1975-12-17 1977-06-22 Mansei Kogyo Kk Device for controlling focal point of optical information reader
NL7600843A (nl) * 1976-01-28 1977-08-01 Philips Nv Inrichting voor het uitlezen van een registratie- drager waarop informatie, bijvoorbeeld en/of ge- luidsinformatie, is aangebracht.
DE2652936C3 (de) * 1976-11-22 1980-11-27 Bts-Systementwicklungs Gmbh, 1000 Berlin Audiovisuelles Wiedergabegerät
US4358796A (en) * 1978-03-27 1982-11-09 Discovision Associates Spindle servo system for videodisc player
SE7813460L (sv) * 1978-03-27 1979-09-28 Mca Disco Vision Videoskivspelare
US4370679A (en) * 1978-03-27 1983-01-25 Discovision Associates Gain correction system for videodisc player apparatus
US4371899A (en) * 1978-03-27 1983-02-01 Discovision Associates Time base error correction system for player
NL7803969A (nl) * 1978-04-14 1979-10-16 Philips Nv Opto-elektronisch fokusfout-detektiestelsel.
NL7805069A (nl) * 1978-05-11 1979-11-13 Philips Nv Inrichting voor puntsgewijze aftasting van een infor- matievlak.
NL7904724A (nl) * 1979-06-18 1980-12-22 Philips Nv Optische aftastinrichting met fokusseerstelsel.
US4349901A (en) * 1980-06-20 1982-09-14 Eastman Kodak Company Apparatus and method for reading optical discs
US4484319A (en) * 1980-09-19 1984-11-20 Matsushita Electric Industrial Co., Ltd. Apparatus for locating a track on disc-like optical information carriers
JPS57105828A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Optical disk recording and reproducing system
JPS57111838A (en) * 1980-12-27 1982-07-12 Olympus Optical Co Ltd Optical information reader
JPS57187071U (fr) * 1981-05-25 1982-11-27
US4464567A (en) * 1981-06-30 1984-08-07 Storage Technology Corporation Photoelectric information and focus detector
US4458144A (en) * 1981-06-30 1984-07-03 Storage Technology Corporation Apparatus for reading information stored in a track pattern on a radiation reflecting record
JPS5856236A (ja) * 1981-09-28 1983-04-02 Hitachi Ltd 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置
JPS59198542A (ja) * 1983-04-26 1984-11-10 Sony Corp 光学デイスクプレ−ヤ
US4740940A (en) * 1985-03-11 1988-04-26 Matsushita Electric Industrial Co., Ltd. Optical information read apparatus
JPH0640392B2 (ja) * 1986-08-29 1994-05-25 三菱電機株式会社 光学式情報記録再生装置の集光スポツト位置検出装置
JPH0777048B2 (ja) * 1987-06-26 1995-08-16 三菱電機株式会社 記録媒体駆動装置
US5179268A (en) * 1987-07-22 1993-01-12 Omron Tateisi Electronic Co. Apparatus for detecting inclination of an optical card
ATE115320T1 (de) * 1987-07-22 1994-12-15 Omron Tateisi Electronics Co Gerät zur feststellung der neigung einer optischen karte.
US4958245A (en) * 1988-04-07 1990-09-18 Insite Peripherals, Inc. Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities
US5121371A (en) * 1990-06-18 1992-06-09 Bernoulli Optical Systems Company Optical servo system for magnetic disk
US5677903A (en) * 1991-03-25 1997-10-14 U.S. Phillips Corporation Multi-layer information storage system with improved aberration correction
JP3063805B2 (ja) * 1991-02-25 2000-07-12 オリンパス光学工業株式会社 光学式情報再生装置および記録媒体
JP3157873B2 (ja) * 1991-11-15 2001-04-16 パイオニア株式会社 光ピックアップ装置における焦点制御装置
EP0793220B1 (fr) * 1992-07-31 2001-05-16 Matsushita Electric Industrial Co., Ltd. Appareil d'enregistrement/lecture optique des données
JP2563747B2 (ja) * 1993-05-31 1996-12-18 松下電器産業株式会社 光学ディスク装置
JPH11501443A (ja) * 1995-12-27 1999-02-02 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 光学的に読取可能な記録媒体を走査する装置
EP0812457B1 (fr) * 1995-12-27 2002-06-26 Koninklijke Philips Electronics N.V. Dispositif servant a scanner un support d'enregistrement a lecture optique
US8638437B2 (en) 2008-02-14 2014-01-28 J.A. Woollam Co., Inc. System and method of aligning a sample
US8064055B2 (en) * 2008-02-14 2011-11-22 J.A. Woollam Co., Inc. System and method of aligning a sample
JP5207240B2 (ja) * 2008-08-11 2013-06-12 学校法人金井学園 光記録再生媒体の焦点誤差検出方法、およびそれに用いる発光装置のビーム分割調節器
US8983787B1 (en) 2008-12-12 2015-03-17 Martin M. Liphardt Method of evaluating data quality

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2266932B1 (fr) * 1973-03-02 1977-09-02 Thomson Brandt
US3919465A (en) * 1974-01-14 1975-11-11 Zenith Radio Corp Optical system for directly detecting spatially recorded signals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422220A1 (fr) * 1978-04-03 1979-11-02 Philips Nv Porteur d'enregistrement presentant une structure de phase a lire par voie optique et dispositif pour la lecture
EP0317224A2 (fr) * 1987-11-17 1989-05-24 Matsushita Electric Industrial Co., Ltd. Système de mise au point pour appareil de disque optique avec des éléments photosensibles dans le plan focal de l'image de la structure d'informations
EP0317224A3 (en) * 1987-11-17 1989-08-30 Matsushita Electric Industrial Co., Ltd. Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits
US4998235A (en) * 1987-11-17 1991-03-05 Matsushita Electric Industrial Co., Ltd. Focus detection system for an optical disk drive using photo sensor elements in the far field of information pits

Also Published As

Publication number Publication date
NO760631L (fr) 1976-08-31
NL7502373A (nl) 1976-08-31
DK141184B (da) 1980-01-28
DK141184C (fr) 1980-07-07
NZ180117A (en) 1978-04-28
CH601888A5 (fr) 1978-07-14
FR2302646B1 (fr) 1982-05-07
NL177157B (nl) 1985-03-01
PL106758B1 (pl) 1980-01-31
AU1140576A (en) 1977-09-01
DK79576A (fr) 1976-08-29
BR7601175A (pt) 1976-09-14
DE2606006A1 (de) 1976-09-09
ATA142276A (de) 1978-04-15
AU505234B2 (en) 1979-11-15
JPS51110214A (fr) 1976-09-29
DE2606006C3 (de) 1978-10-05
IT1057601B (it) 1982-03-30
GB1533888A (en) 1978-11-29
AT347149B (de) 1978-12-11
JPS574016B2 (fr) 1982-01-23
DE2606006B2 (de) 1978-01-26
ZA76172B (en) 1977-08-31
AR208585A1 (es) 1977-02-15
NL177157C (nl) 1985-08-01
SE7602296L (sv) 1976-08-30
BE838982A (fr) 1976-08-26
SE411601B (sv) 1980-01-14
US4006293A (en) 1977-02-01
CA1072679A (fr) 1980-02-26

Similar Documents

Publication Publication Date Title
FR2302646A1 (fr) Dispositif pour la le
FR2299816A1 (fr) Dispositif pour inciser la region
BE840930A (fr) Dispositif compteur-tachymetre integre pour bicyclette
FR2301416A1 (fr) Dispositif d
FR2301851A1 (fr) Dispositif de traitem
NL7606846A (nl) Halfgeleiderinrichting.
NL7610254A (nl) Afgeefinrichting.
FR2300361A1 (fr) Dispositif pour
FR2321010A1 (fr) Dispositif pour defibreur
FR2334870A1 (fr) Dispositif de raccordement
SE414697B (sv) Anordning for infrarod-spaning
FR2300419A1 (fr) Dispositif semi-cond
FR2307871A1 (fr) Dispositif pour realiser la culture demicro-organismes
FR2302555A1 (fr) Dispositif de
FR2300253A1 (fr) Dispositif
FR2319288A1 (fr) Dispositif pour travailler le sol
FR2299750A1 (fr) Dispositif de securite pour la
FR2321625A1 (fr) Dispositif de blocage pour ecrou
FR2298633A2 (fr) Dispositif de d
FR2297696A1 (fr) Rotor pour dispositif de projection
BE847816A (fr) Dispositif de transformateur.
FR2328769A1 (fr) Dispositif pour realiser la culture demicro-organismes
FR2302652A1 (fr) Dispositif d
BE849136A (fr) Dispositif de recurage
FR2316624A1 (fr) Dispositif electroradiographique

Legal Events

Date Code Title Description
ST Notification of lapse